84 entries under verb topic. ×

10
unfasten(separate, release, loose, detach)
6
loosen(hold, increase, separate, release)
5
tear off(fix, stick, connect, attach)
4
disconnect(separate, release, loose, loosen)
4
release(noun, hold, separate, keep)
4
undo
4
detach(separate, release, join, loose)
4
disjoin(separate, release, loose, loosen)
3
open(adjective, hold, fix, separate)
3
sunder
3
unbind
3
unlink(separate, release, loose, loosen)
3
untie(separate, release, loose, loosen)
2
disengage(join, connection)
2
dissociate
2
break(destroy, agree, continue, face)
2
break up(expression, phrasal verb)
2
demolish(help, raise)
2
divide(separate, release, agree, unite)
2
free(adjective, hold, separate, keep)
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APASmart Define. (2016). fasten thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fasten/thesaurus/antonyms
ChicagoSmart Define. 2016. "fasten thesaurus" https://smartdefine.org/fasten/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, fasten thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fasten/thesaurus/antonyms>.
MLASmart Define. "fasten thesaurus" 3 March 2016. Web. 28 September 2026. <https://smartdefine.org/fasten/thesaurus/antonyms>